Last updated: July 17, 2026

Application No. 18/873,476

RING SIGNATURE SYSTEM, TERMNAL, METHOD, AND PROGRAM

Non-Final OA

Filed

Dec 10, 2024

Priority

Jun 17, 2022 — nonprovisional of PCTJP2022024423

Examiner

CATTUNGAL, DEREENA T

Art Unit

2431

Tech Center

2400 — Computer Networks

Assignee

Nippon Telegraph and Telephone Corporation

OA Round

1 (Non-Final)

Interview Optional

— +29.7% interview lift. Examiner has a relatively high allowance rate (80%); +29.7% interview lift. A written response may suffice.

Based on 279 resolved cases, 2023–2026

Examiner Intelligence

CATTUNGAL, DEREENA T View full profile →

Grants 80% — above average

Career Allowance Rate

224 granted / 279 resolved

+22.3% vs TC avg

Strong +30% interview lift

Without

With

+29.7%

Interview Lift

resolved cases with interview

Typical timeline

2y 9m

Avg Prosecution

23 currently pending

Career history

303

Total Applications

across all art units

Statute-Specific Performance

§101

1.8%

-38.2% vs TC avg

§103

85.4%

+45.4% vs TC avg

§102

6.3%

-33.7% vs TC avg

§112

4.3%

-35.7% vs TC avg

Black line = Tech Center average estimate • Based on career data from 279 resolved cases

Prosecution Timeline

Dec 10, 2024

Application Filed

Apr 03, 2026

Non-Final Rejection mailed (current)

Precedent Cases

Applications granted by this same examiner with similar technology

18/554,537

Patent 12683804

Hardened Encoded Message Check for RSA Signature Verification

2y 9m to grant Granted Jul 14, 2026

18/854,418

Patent 12664251

STATEMENT PROOF AND VERIFICATION

1y 8m to grant Granted Jun 23, 2026

18/859,055

Patent 12652180

METHOD, APPARATUS, DEVICE, AND STORAGE MEDIUM FOR DATA PROCESSING

1y 7m to grant Granted Jun 09, 2026

18/393,227

Patent 12645819

MANAGEMENT OF MULTIPLE DIGITAL IDENTITIES USING A CENTRALIZED DISTRIBUTED LEDGER

2y 5m to grant Granted Jun 02, 2026

18/004,333

Patent 12632608

INTEGRATED CIRCUIT DEVICE WITH PROTECTION AGAINST MALICIOUS ATTACKS

3y 4m to grant Granted May 19, 2026

Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.

Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2

Expected OA Rounds

80%

Grant Probability

99%

With Interview (+29.7%)

2y 9m (~1y 2m remaining)

Median Time to Grant

Low

PTA Risk

Based on 279 resolved cases by this examiner. Grant probability derived from career allowance rate.